The timed restrictions only apply to one class of user though, and even then only if they don't have permit.

But it isn't permissive, it is a public right of way. And the timed restriction with an exception?

Indeed it is. I mapped it in May!

A common mistake when starting is not joining ways up - they need to be linked at a common node, not just be close together. It's hard to see the difference visually, but it's important for routing applications and the like.

If you're not sure how to tag something, the Map_features page on the wiki may help, but you could also look for another example and see how it has been done elsewhere. The Data overlay is your friend there - on the blue + in the top right of the main map (you can look at it in the editor too, but the Data page saves going back and forth).

The fact that something is a public document, or prepared using public funds, does not make it not subject to copyright. The local authority has Database Copyright in this information (though they may be more persuadable than OS to let us use their info under the terms of the OSM license), as well as the OS's copyright on the map. I don't think anyone here can give a definitive answer - it would need a test case in court. But copying anything off an OS map, whatever your opinion of it, must be considered a potential copyright issue and therefore not respecting principle of keeping OSM squeaky clean so far as sources are concerned. Frustrating perhaps, but that's why OSM exists in the first place.

Yes, I didn't go down Clay Street further than the library.

Not sure where Lion Mill is/was, I may not even have passed it as I basically trusted the coherent chunk you'd done west of the main street. But there were two very new areas of housing that almost certainly have only been accessible in the last few weeks: Cyprian Rust Way, here:
osm.org/?lat=52.344355&lon=0.33066&zoom=17&layers=B000FTFTT&mlat=52.34546&mlon=0.33318
(which has more to come between there and Northfield Road) and Aspen Way, here:
osm.org/?lat=52.344355&lon=0.33066&zoom=17&layers=B000FTFTT&mlat=52.34425&mlon=0.33073

However, I now suspect there may be a small chunk missing at the end of Brewhouse Lane, which I didn't go down thinking it was probably complete, but you'll probably know whether this is the case or not:
osm.org/export/embed.html?bbox=0.33704,52.33256,0.34472,52.33781&layer=mapnik&marker=52.33490,0.34165

I am indeed working on it, but the first two attempts failed - the size of the data has increased considerably since the last full reload and this is causing a number of new problems.

Welcome.

Do you mean how or where? If how, here: osm.wiki/Beginners%27_Guide

You can check by looking at the Data layer on the main map using the little blue + in the top right corner.

Never heard of Chattanooga? Glenn Miller? - http://www.allthelyrics.com/lyrics/glenn_miller/chattanooga_choo_choo-lyrics-157587.html

As a follow up, typical example: osm.org/?lat=52.244442&lon=0.399402&zoom=18&layers=B000FTF

As people have said, there's differences of opinions. But I'm in the "keep them separate camp" and put the paths in, even if it is only a short way through an entrance - someone will connect it up sooner or later.

There's two reasons, I think, one a point of principle and the other practical: (a) the road way is marking a centre line, and the park boundary does not share that centre line - on a typical 8m wide road with 2m each side of verge and/or footway, the park boundary will be often be 6m or more from the line marked out by the road, and that's a sufficiently large distance to be worth taking into account; and (b) it's much harder to edit ways which are overlaid on each other.

I usually edit in JOSM in two phases - I add the ways with no tags based on the tracks and then I do the tags from my audio notes. When I do that I first select use 'paste tags' to get a set of basic tags on each way, usually highway=residential,source=survey and name=xx because it's easier to edit an existing tag than add a new one, but it has the side effect that all the ways have 'xx' and I can search for that before uploading to make sure I've not missed one. Of course, I sometimes need to delete that if the name really isn't known or the road has no name.

Err, what's the problem: railway platforms *are* rendered already on the Mapnik layer: osm.org/?lat=52.604392&lon=0.366216&zoom=18&layers=B000FTF

Why not contact the person concerned. The one on Edward Street and on Patrick Street was done by user Rosscoe (use the data layer to find out). Even if the roundabout were correct, leaving the old mini roundabout or even road across the middle can't be.

The more you can collect at one go the better, as it saves going back. parking and bicycle_parking are also useful amenities to have recorded.

You might want to consider landuse as well, not least because these areas make for a much more attractive map. Small areas of grass (landuse=grass), parks (leisure=park), recreation grounds (landuse=recreation_ground), allotments (landuse=allotments), village greens in the UK (landuse=village_green), and then retail, office and industrail estates (landuse=retail, landuse=commercial, landuse=industrial). landuse=residential isusually a more blanket larger area.

Here's a typical example area with lots of detail in both landuse and amenties:
osm.org/?lat=52.18583&lon=0.1727&zoom=17&layers=B000FTF

Are you sure that's what happened. Some recent versions of JOSM (still?) treat a second download (e.g. if you pan and need to bring some more data down) as a collision with your changes, even though you're the only one who made changes.

amenity=cafe

Very often a church is surrounded by a grave yard, for which there is a tag (amenity=grave_yard). The church building itself can be outlined with building=church (or just building=yes) as well as amenity=place_of_worship (or, better IMO, a separate amenity=place_of_worship node separate from the building area). If there is remaining land around the building which isn't a grave yard, then it isn't really the church either; I would tag it landuse=grass if that's what it is, if I could be bothered, and if I can determine the outline, or just leave it if not.